420 



PETALOIDE^ 



CLASS 11. 



MONOCOTYLEDONOUS \ or ENDOGENOUS 



FLOWERING, PLANTS. 



Cellular and vascular. 



( 



creasing by a succession of annual layers on the outside 

 of the old ones, usually with no distinction of bark, wood 

 pith, or medullary rays, but consisting of cellular tissue 

 in which the vascular is inserted in confused bundles, or 

 in a single ring, the newest formation being internal. 

 Leaves mostly alternate below, often sheathing, perma- 

 nent and withering on the stem, more rarely joiwted and 

 deciduous, with usually parallel nerves connected by sim- 

 ple transverse veins, rarely netted-veined. Floivers with 

 a single perianth (or without one), the parts mostly ar- 

 ranged in a ternary manner, sometimes when in a double 

 row the external one green and resembling a calyx. Em- 

 bryo with one cotyledon, or if apparently 2 they are 

 alternate. Plumule and radicle either within the cotyle- 

 don, or lodged in a cleft in its side, or attached to its flat 

 face. 



SuB-Ci.AssI. PETALOIDE^. (0 



■CV.) 



Flowers never glumaceous, sometimes naked or nearhj so (as in 

 - Araceae, Pistiacete, N'aiadacea;, and Juncaginacea;), generally 



with a more or less coloured perianth, the pieces of which are 



in a single or double whoid?' 



89. 



Conspectus of the Orders. 



L Ovary adnate with the tube of the perianth (inferior). 

 * Leaves with parallel nerves and simple transverse veins. 



ORCiUDACEiE. Flowers perfect, gynandrous ; stamens and 

 united. ' 



stvle 



1 From /«,v«^ one or single, and xo'nj\y,^m, a cotyledon. 



T^is^i^are «fvttl"lfv .ifp^n^f •' l""^ Cjperaceo»s%lants, where the stamens and 

 I umalreour ^ ^Iteinate imbricated me7nbranaceous scales or bracteas, hence 



